1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <regex>
11
12// template <class charT, class traits = regex_traits<charT>> class basic_regex;
13
14// basic_regex(const charT* p, flag_type f = regex_constants::ECMAScript);
15
16#include <regex>
17#include <cassert>
18
19template <class CharT>
20void
21test(const CharT* p, std::regex_constants::syntax_option_type f, unsigned mc)
22{
23    std::basic_regex<CharT> r(p, f);
24    assert(r.flags() == f);
25    assert(r.mark_count() == mc);
26}
27
28int main()
29{
30    test("\\(a\\)", std::regex_constants::basic, 1);
31    test("\\(a[bc]\\)", std::regex_constants::basic, 1);
32    test("\\(a\\([bc]\\)\\)", std::regex_constants::basic, 2);
33    test("(a([bc]))", std::regex_constants::basic, 0);
34
35    test("\\(a\\)", std::regex_constants::extended, 0);
36    test("\\(a[bc]\\)", std::regex_constants::extended, 0);
37    test("\\(a\\([bc]\\)\\)", std::regex_constants::extended, 0);
38    test("(a([bc]))", std::regex_constants::extended, 2);
39
40    test("\\(a\\)", std::regex_constants::ECMAScript, 0);
41    test("\\(a[bc]\\)", std::regex_constants::ECMAScript, 0);
42    test("\\(a\\([bc]\\)\\)", std::regex_constants::ECMAScript, 0);
43    test("(a([bc]))", std::regex_constants::ECMAScript, 2);
44
45    test("\\(a\\)", std::regex_constants::awk, 0);
46    test("\\(a[bc]\\)", std::regex_constants::awk, 0);
47    test("\\(a\\([bc]\\)\\)", std::regex_constants::awk, 0);
48    test("(a([bc]))", std::regex_constants::awk, 2);
49
50    test("\\(a\\)", std::regex_constants::grep, 1);
51    test("\\(a[bc]\\)", std::regex_constants::grep, 1);
52    test("\\(a\\([bc]\\)\\)", std::regex_constants::grep, 2);
53    test("(a([bc]))", std::regex_constants::grep, 0);
54
55    test("\\(a\\)", std::regex_constants::egrep, 0);
56    test("\\(a[bc]\\)", std::regex_constants::egrep, 0);
57    test("\\(a\\([bc]\\)\\)", std::regex_constants::egrep, 0);
58    test("(a([bc]))", std::regex_constants::egrep, 2);
59}
60